Valve-cage remover



Patented Oct. 7, 1924.

y UNITED ST'IES PATENT OFFICE.

:rAi/Ins ivI. HARRUB AND nomen. nrvson, on HoNoLULU, TnnRIroRY orHAWAII;

` sAIzo Tyson AssIGNoR To SAID HARRUB.

VALVE-CAGE REMOVER. V

Application filed April 16, 1923. `,Serial No. 632,467.

To aZZ whom t may concer/n.:

Be it known that we, JAMES M. HARRUB and HoMnR N. TYsoN, citizens of theUnited States, residing at Honolulu, Territory of Hawaii, have inventedcertain new and useful Improvements in a. Valve-Cage Remover, of whichthe following is a specification. v

This invention relates to an improved tool y for `facilitating the quickrand expeditious removal ofvalve cagesfrom motors having valves oftheoverheadtype, the improved tool being `so lconstructed, that the entirevalve assembly can be removed, without in jury thereto or to thecylinder head.

Another object of the invention is to provide an improved tool forpulling or removingvalve cages of overhead valves from motors, which canbe readily placed in position in engagement with 'the valve forfacilitating the removal of the valve assembly from the Vcylinder head,the tool being so arranged as to permit the use thereof by the layman,without the necessity of employing a skilled mechanic.

:Another object of the invention is to provide a valve cage remover,ywhich can be used to f the best 'advantage by mechanics, and vwhichwill considerably simplify their work in the handling of overhead valveassemblies in Buick and other automobiles.

A still furtherl object of the invention is to provide a valve cageremover for automobile moto-rs Aemploying overhead valves which can alsobe used to the best advantage for temporary grinding valve seats andloosening any carbon which might be adhering to the valve and seat orcage.

A still Jfurther object of the invention is to provide an improved valvecage puller of the above character, which will be durable and efficientin use,- one which will be simple and easy to manufacture and which canbe placed upon the `market at a reasonable cost. With these and otherobjects in view 'the invention consists in the novel construction,arrangement and vformation. of parts, as will be hereinafter morespeciiically described, claimed and illustrated in the accoinpanyingldrawings, in which drawings:

Figure 1 is a side elevation of the improved valve cage puller showingthesame partly in section andin use for pulling'a valve cage, thecylinder head and valve assembly being shownin cross section.

Figure2 is a horizontal section talnanhonl the line 2-2'01" Figure 1.

Figure 3 is a horizontal section the line 3;-3 of Figure 1. y

F'gure 4 is a bottom plan view of the puller plate; v

Figure 5 is a transverse vertical section through the improved valvecage pulling tool showing the same applied to a' cylinder head. y

` Figure 6 is an enlarged fragmentary ,section through a portion of vthetool showing taken .on

the'use of swivel seats for lifting screws in *.Referring to 4thedrawings in detail,

wherein similarreference characters designate `corresponding partsthroughout the several views, the letter A generallyr indi- 'categ theimproved valve cagepulling tool and B a motorwith which the same can beused.

andas shown for example a Buick motor is illustrated, which includes thecylinder yhead 10 having `the usual way 11 for the valve cage 12. Thevalve cage 12 is held in7 position in the ordinary manner, that is by athreaded ring, fitted into the threaded end 13 of the said way 11. Thevalve cage 12 is of the ordinary construction and vslidably supports thestem 14 of the valve 15.v The upper end of the stem is'provided with theordinary type of cross pin 16 which bearsagainst the upperwasher'llorthe expansion spring'18, which is coiled aboutthe said valvestem 14. The lower end of this spring seats on the lower washer 19.v l

The improved tool Aembodies van upper pulling plate 20, which as shownis substantially of U-shape when viewed in plan and includes endportions 21 and 22 and the arcuate connecting body portion-23 which isadapted to encircle the valve stem The motor BV vcan of vcoursebe of anyn `preferred type embodying overhead valves 14. Now the inner edges ofthe end portions 21 and 22 and the connect-ing arcuate body portion 28are provided with a rabbeted portion 24 defining a flange 25, on whichis adapted to seat the upper washer 17, when the valve cage or thecomplete valve essembly is to be pulled from out of the way 11. Theforward end of the flange or shoulder 25 at the lower surface thereof isinclined as at 26 to define a knife edge inserting point 27 and it isobvious that when the pulling plate 20 is placed in position that theseedges 26 engage between the up er end of the valve spring 18 and the waser 17 and thus facilitate the positioning of the plate in position. Thevalve spring being adapted to seat under the plate, while the washer isadapted to seat upon the shoulder or flange 25.

The end portions 21 and 22 are provided with threaded ways 28 for thereception of the lifting cap screws 28 and 29. The lower ends of thesecap screws are provided with ball bearing ends 30, which are adapted toengage either removable swivel feet 31 or the Ufshaped bearing plate 32.The U-shaped bearing plate 82 is utilized where an uneven surface isencountered, while the swivel feet ,31 are utilized where flat sur facesare encountered.

The bearing plate 32 is of a flat construction and is shaped similar tothe pulling plat`e'20 and also includes the end portions 33 and 34 andthe connecting' arcuate body portion 35 which. is adapted to encirclethe valve spring 18 and stem 14. The end portions and 84 are providedwith sockets 36 which are. adapted to be positioned in the ball bearingends 30 of the cap lifting screws 28 and 29.

A key or wrench 40 is also used with the improved tool, and as shownthis key or wrench 40 embodies a shank 41 having the diametricallyextending handle 42 arranged with its upper end to facilitate theturning of said shank. The lower end of the shank 41 is provided with ahead 48 for receiving the upper end of the valve stem 14 and` this headis slotted diametrically as at 44 for the reception of the valve key 16.

lhe handle 42 is preferably disposed below the upper end of the shankfor a purpose, which will be hereinafter more fully described.

1n use of the improved` tool, when it is desired to pull the cage 12 orthe entire valve assembly, the bearing plate 32 or the feet 31 as thecase may be, are placed upon the upper surface of the cylinder head,

after lwhich, the bearing plate 2O is placed in position between thevalve spring 18 and the washer 17, as heretofore described until theball heads or bearing members 30 fit in the sockets 36 of the plate 32or in the bearing feet 31. The key 40 can now be used and is insertedover the valve stem 14 and the stem is turned until the pin 16 comes indirect alignment with the adjusting or lifting cap screws 28 and 29.

The cap screws 28 and 29 are now rotated alternately for raising thepuller plate 20 and it is obvious that the raising of this plate willpull the cage from the way 11.

llt is to be understood of course that prio-r to the pulling of the waythat the retaining screw threaded ring is now thread ed out ofthethreaded portion 12o-f the way 11 and that the ordinary rocker andtappet arms are lifted up from out of engagement with the valve stems.

ln case it is desired to slightly grind the valve seats the tool Yisplaced in position and as heretofore described the screws 28 and 29 areadjusted slightly to lift or pull the valve 15 into tight engagementwith the seat after which the wrench or lkey 40 can be rotated several'times which will of course loosen any `carbon between the valve and itsseat. If desired kerosene can lbe used for loosening 'carbonized andsticky cages when the valves are being temporarily ground, the retainingrings for the cages not being removed.

From the foregoing description, `it can be seen that an improved toolhas been provided for pulling valve cages of overhead valves which is ofsimple and durable construction, and which will permit the convenientrand expeditious removing of the valve cage.

VChanges in details may be made without departing from the spirit orscope of this invention.

What we claim as new yis:-h

1. A valve puller comprising` a puller plate embodying end portions andaconnecting arcuate body arranged toeXtend around the valve stem andspring, means carried by the plate for engaging the ordinary valvespring washer, adjustable members carried by the plate adjacent the endsthereof, and bearing means for engaging the lower ends of said adjustinglmembers and the cylinder vadjacent to the "valve to be pulled.

2. The combination with a cylinder head having a way therein, a valvecage in said way and a valve stem and body carried by the cage, a washerand spring on said stem, of a valve cage pulling tool comprising a.puller plate adapted to encircle ythe valve stem and Vspring andarranged yto engage the lower surface of the washer and the upper edgeof said spring, bearing means arranged to engage the upper end of thecylinder head and adjustable members carried by the puller platearranged to engage said bearing means.

3. A valve cage lifter and valve grinding tool comprising a bearingdevice adapted to engage the upper end of `a,I cylinder head, a pullerplate, means formed on the puller plate for engaging between the valvespring washer and spring, and: adjustable cap screws carried by thepuller plate arranged to engage the bearing deYice. I

4. valve cage pulling tool comprising an arcuate bearing plate havingsockets formed in the upper surface thereof, a puller plate, adjustablecap ffsc'rews carried by the puller plate adjacent'- to each endthereof, ball ends formed on 'the lower terminals of the cap screws forengaging in the sockets, an arcuate shoulder formed on said pullermembers, and inclined lower leading faces formed on the forward ends ofthe shoulder n at the lower surface thereof.

In testimony whereof we aix our signatures in presence of two witnesses.

JAMES M. HARRUB. HOMER N. TYSON Witnesses:

H. M. MAXAM, J oHN R. MoNIz.

